I left my hot water on all night by accident. Now the water is EXTREMELY hot and the floor above the water line is warm. When I turn on the cold water, the first 10 seconds or so, hot water is coming out. The pressure is terrible. I have looked under the house and in the kitchen area and cannot detect a leak. I finally turned off the water heater yesterday and I am going to relight it tonight. Does anyone know what might be going on?